Meghan Markle made sure she followed one American tradition on her wedding day.

The bride had something new (her Givenchy and Stella McCartney wedding gowns, among other things) and something borrowed (a tiara, on loan from Queen Elizabeth). But how about something blue?

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Meghan Markle's second wedding dress: Photos!

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Meghan Markle's second wedding dress: Photos!

WINDSOR, UNITED KINGDOM - MAY 19: Duchess of Sussex and Prince Harry, Duke of Sussex wave as they leave Windsor Castle after their wedding to attend an evening reception at Frogmore House, hosted by the Prince of Wales on May 19, 2018 in Windsor, England. (Photo by Steve Parsons - WPA Pool/Getty Images)

WINDSOR, UNITED KINGDOM - MAY 19: Prince Harry, Duke of Sussex helps his new bride the Duchess of Sussex into the car as they leave Windsor Castle after their wedding to attend an evening reception at Frogmore House, hosted by the Prince of Wales on May 19, 2018 in Windsor, England. (Photo by Steve Parsons - WPA Pool/Getty Images)

WINDSOR, ENGLAND - MAY 19: Prince Harrry, Duke of Sussex and Meghan, Duchess of Sussex depart Windsor Castle following their wedding on May 19, 2018 in Windsor, England. Prince Henry Charles Albert David of Wales marries Ms. Meghan Markle in a service at St George's Chapel inside the grounds of Windsor Castle. Among the guests were 2200 members of the public, the royal family and Ms. Markle's Mother Doria Ragland. (Photo by Samir Hussein/WireImage)

Britain's Prince Harry, Duke of Sussex, (L) opens the passenger door of an E-Type Jaguar car for his wife Meghan Markle, Duchess of Sussex, (R) as they leave Windsor Castle in Windsor on May 19, 2018 after their wedding to attend an evening reception at Frogmore House. (Photo by Steve Parsons / POOL / AFP) (Photo credit should read STEVE PARSONS/AFP/Getty Images)

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When the Duchess of Sussex was seen leaving for her evening reception at Frogmore House wearing a stunning Stella McCartney gown, we couldn't help but notice the large, emerald-cut aquamarine ring on her right hand. It turns out the blue-hued accessory once belonged to Princess Diana, husband Prince Harry's late mother.

The former actress also included another blue-hued detail in her evening reception look -- the soles of her Aquazzura heels were colored in a blue tint.

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The best photos from Meghan and Harry's royal wedding

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The best photos from Meghan and Harry's royal wedding

Prince Harry, Duke of Sussex and the Duchess of Sussex hold hands in the Ascot Landau Carriage as their carriage procession rides along the Long Walk, on May 19, 2018 after their wedding ceremony.

(Photo by Yui Mok - WPA Pool/Getty Images)

Britain's Prince Harry, Duke of Sussex and his wife Meghan, Duchess of Sussex emerge from the West Door of St George's Chapel, Windsor Castle, in Windsor, on May 19, 2018 after their wedding ceremony.

(Photo by Ben Birchall / POOL / AFP)

Ms. Meghan Markle walks down the aisle at the start of her wedding to Prince Harry in St George's Chapel at Windsor Castle on May 19, 2018 in Windsor, England.

(Photo by Danny Lawson - WPA Pool/Getty Images)

Britain's Prince Harry, Duke of Sussex and his wife Meghan, Duchess of Sussex leave from the West Door of St George's Chapel, Windsor Castle, in Windsor on May 19, 2018 in Windsor, England.

(Photo by Ben STANSALL - WPA Pool/Getty Images)

The Duke and Duchess of Sussex on the steps of St George's Chapel at Windsor Castle following their wedding ceremony in St George's Chapel at Windsor Castle on May 19, 2018 in Windsor, England.

(Photo by Danny Lawson - WPA Pool/Getty Images)

Prince Harry, Duke of Sussex and The Duchess of Sussex leave St George's Chapel, Windsor Castle after their wedding ceremony on May 19, 2018 in Windsor, England.

(Photo by Andrew Matthews - WPA Pool/Getty Images)

Princess Charlotte sticks out her tongue as she rides in a car to the wedding of Prince Harry and Meghan Markle at St George's Chapel in Windsor Castle on May 19, 2018 in Windsor, England.

(Photo by Andrew Milligan - WPA/Getty Images)

Britain's Prince Harry, Duke of Sussex kisses his wife Meghan, Duchess of Sussex as they leave from the West Door of St George's Chapel, Windsor Castle, in Windsor, on May 19, 2018 after their wedding ceremony.

(Photo by Danny Lawson / POOL / AFP)

Britain's Prince Harry, Duke of Sussex and his wife Meghan, Duchess of Sussex wave from the Ascot Landau Carriage during their carriage procession on Castle Hill outside Windsor Castle in Windsor, on May 19, 2018 after their wedding ceremony.

(Photo by Paul ELLIS / POOL / AFP)

US actress Meghan Markle, accompanied by Britain's Prince Charles, Prince of Wales walks down the aisle toward her husband-to-be Britain's Prince Harry, Duke of Sussex, in St George's Chapel, Windsor Castle, in Windsor, on May 19, 2018 during their wedding ceremony.

(Photo by Dominic Lipinski / POOL / AFP)

Meghan Markle and her mother, Doria Ragland, are driven along the Long Walk as they arrive for her wedding ceremony to marry Britain's Prince Harry, Duke of Sussex, at St George's Chapel, Windsor Castle, in Windsor, on May 19, 2018.

(Photo by EMMANUEL DUNAND / AFP)

Prince Harry and Meghan Markle during their wedding service, conducted by the Archbishop of Canterbury Justin Welby in St George's Chapel at Windsor Castle on May 19, 2018 in Windsor, England.

(Photo by Dominic Lipinski - WPA Pool/Getty Images)

Princess Charlotte on the steps of St George's Chapel after the wedding of Prince Harry and Meghan Markle in St George's Chapel at Windsor Castle on May 19, 2018 in Windsor, England.

(Photo by Jane Barlow - WPA Pool/Getty Images)

Britain's Prince Harry, Duke of Sussex and his wife Meghan, Duchess of Sussex emerge from the West Door of St George's Chapel, Windsor Castle, in Windsor, on May 19, 2018 after their wedding ceremony.

(Photo by Ben STANSALL / POOL / AFP)

Meghan Markle is driven to St George's Chapel in Windsor Castle along with her page boys Brian and John Mulroney at St George's Chapel at Windsor Castle before the wedding of Prince Harry to Meghan Markle on May 19, 2018 in Windsor, England.

(Photo by Toby Melville- WPA Pool/Getty Images)

Britain's Prince Harry, Duke of Sussex and Meghan Markle, Duchess of Sussex, stand together at the altar in St George's Chapel, Windsor Castle, in Windsor, on May 19, 2018 during their wedding ceremony.

(Photo by Dominic Lipinski / POOL / AFP)

Prince Harry, arrives with his best man Prince William, Duke of Cambridge for the wedding ceremony of Prince Harry and US actress Meghan Markle at St George's Chapel, Windsor Castle on May 19, 2018 in Windsor, England.

(Photo by Odd Anderson - WPA Pool/Getty Images)

Britain's Prince Harry, Duke of Sussex and his wife Meghan, Duchess of Sussex arrive back at Windsor Castle in the Ascot Landau Carriage after their wedding ceremony and after their procession in Windsor, on May 19, 2018.

Earlier in the day, Meghan honored Princess Diana in the most tear-jerking way by including her favorite flowers, Forget-Me-Nots, in her bespoke bridal bouquet.

Meghan and Harry pulled off the wedding of the decade on Saturday. From the star-studded guest list to the personal touches (including Meghan's veil), every aspect of the big day was flawlessly executed. For more on the wedding, watch the video above!